28912318 has 8 divisors (see below), whose sum is σ = 44540712. Its totient is φ = 14065416.

The previous prime is 28912283. The next prime is 28912321. The reversal of 28912318 is 81321982.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195280 + ... + 195427.

It is an arithmetic number, because the mean of its divisors is an integer number (5567589).

Almost surely, 2^28912318 is an apocalyptic number.

28912318 is a deficient number, since it is larger than the sum of its proper divisors (15628394).

28912318 is a wasteful number, since it uses less digits than its factorization.

28912318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390746.

The product of its digits is 6912, while the sum is 34.

The square root of 28912318 is about 5377.0175748271. The cubic root of 28912318 is about 306.9217298795.

The spelling of 28912318 in words is "twenty-eight million, nine hundred twelve thousand, three hundred eighteen".